Fix duplicate ProductAttributeCombinations/ProductSpecifciationAttributes on DTO result

Author: Patrick McCaffrey

Nop.Plugin.Api/ApiMapperConfiguration.cs

@@ -188,7 +188,6 @@ private void CreateProductMap()
         {
             AutoMapperApiConfiguration.MapperConfigurationExpression.CreateMap<Product, ProductDto>()
                 .IgnoreAllNonExisting()
-                .ForMember(x => x.ProductAttributeMappings, y => y.Ignore())
                 .ForMember(x => x.FullDescription, y => y.MapFrom(src => WebUtility.HtmlEncode(src.FullDescription)))
                 .ForMember(x => x.Tags,
                     y => y.MapFrom(src => src.ProductProductTagMappings.Select(x => x.ProductTag.Name)));

Nop.Plugin.Api/Helpers/DTOHelper.cs

@@ -84,9 +84,6 @@ public ProductDto PrepareProductDTO(Product product)
             var productDto = product.ToDto();
 
             PrepareProductImages(product.ProductPictures, productDto);
-            PrepareProductAttributes(product.ProductAttributeMappings, productDto);
-            PrepareProductAttributeCombinations(product.ProductAttributeCombinations, productDto);
-            PrepareProductSpecificationAttributes(product.ProductSpecificationAttributes, productDto);
 
             productDto.SeName = _urlRecordService.GetSeName(product);
             productDto.DiscountIds = product.AppliedDiscounts.Select(discount => discount.Id).ToList();